New SBF 302 Datsun owner

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I just picked up a 75 280z with a SBF 302 from an elder retired guy who did not know much about the car. The body is flawless but the engines running a bit rough with the 4 barrel edlebrock. It idles great but bogs down at WOT. Any tips on dialing in the carbs?

I replaced the Edelbrock with a 570 CFM Holley Street Avenger carb approx eight years ago. The only modification I made was to add (simple) stiffer springs in the vacuum secondary control module to delay onset of the secondaries opening.

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I'd at least waste SOME time on the Edelbrock unit before throwing $$ at it and going over to a Holley. I have an Edelbrock on my 351w right now, and when I got it linkages were seized up, metering rods were stuck, it was a mess. Got a $30 rebuild kit, and took my time setting float height etc, went through a bunch of PB Blaster getting things moving again, but y'know what, it runs great now. Fires right up, no bogs, etc.

585Z had great advice, I was actually going to suggest a few of those points myself.